88 lines
2.8 KiB
C
88 lines
2.8 KiB
C
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#include <Library/BaseMemoryLib.h>
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#include <Library/DevicePathLib.h>
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#include <Library/MemoryAllocationLib.h>
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#include <Library/PrintLib.h>
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#include <Library/UefiBootServicesTableLib.h>
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#include <Library/UefiLib.h>
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#include <Library/UefiRuntimeServicesTableLib.h>
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/*
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#include <Pi/PiMultiPhase.h>
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#include <Protocol/MpService.h>
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*/
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#include <Uefi.h>
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#include <Uefi/UefiSpec.h>
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#include "fb.h"
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#include "gdt.h"
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#include "interrupt.h"
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#include "text.h"
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EFI_STATUS EFIAPI UefiMain(IN EFI_HANDLE ImageHandle,
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IN EFI_SYSTEM_TABLE *SystemTable) {
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EFI_STATUS Status;
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EFI_GRAPHICS_OUTPUT_PROTOCOL *gop;
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EFI_SIMPLE_FILE_SYSTEM_PROTOCOL *fsp;
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// EFI_MP_SERVICES_PROTOCOL *mps;
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SystemTable->BootServices->SetWatchdogTimer(
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0, 0, 0, NULL); // Disable watch dog timer
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Status = SystemTable->BootServices->LocateProtocol(
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&gEfiGraphicsOutputProtocolGuid, NULL,
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(VOID **)&gop); // Get GOP Protocol
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if (EFI_ERROR(Status)) {
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Print(L"Error:Failed to locate EFI Graphics Output Protocol - %r",
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Status);
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return Status;
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}
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Status = SystemTable->BootServices->LocateProtocol(
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&gEfiSimpleFileSystemProtocolGuid, NULL, (VOID **)&fsp);
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if (EFI_ERROR(Status)) {
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Print(L"Error:Failed to locate EFI Simple FileSystem Protocol - %r",
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Status);
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return Status;
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}
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/*
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Status = SystemTable->BootServices->LocateProtocol(
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&gEfiMpServiceProtocolGuid, NULL,
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(VOID **)&mps); // Get MultiProcessor Protocol
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if (EFI_ERROR(Status)) {
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Print(L"Error:Failed to locate EFI MP Services Protocol - %r",
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Status); return Status;
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}
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*/
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FrameBuffer_init(gop);
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UINTN MemoryMapSize = 1, MapKey, DescriptorSize;
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UINT32 DescriptorVersion;
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do {
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EFI_MEMORY_DESCRIPTOR *mem_desc =
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(EFI_MEMORY_DESCRIPTOR *)AllocatePool(MemoryMapSize);
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Status = SystemTable->BootServices->GetMemoryMap(
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&MemoryMapSize, mem_desc, &MapKey, &DescriptorSize,
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&DescriptorVersion);
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if (EFI_ERROR(Status)) continue;
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Status =
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SystemTable->BootServices->ExitBootServices(ImageHandle, MapKey);
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} while (EFI_ERROR(Status));
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GDT_init();
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interrupt_init();
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for (int y = 0; y < buffer.VerticalRes; y++) {
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for (int x = 0; x < buffer.HorizontalRes; x++) {
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EFI_GRAPHICS_OUTPUT_BLT_PIXEL *pixel =
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(EFI_GRAPHICS_OUTPUT_BLT_PIXEL *)buffer.BaseAddress +
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(buffer.HorizontalRes * y) + x;
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RGBtoPixel(pixel, 0xFF0000);
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}
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}
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textout('A');
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textout('p');
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textout('p');
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textout('l');
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textout('e');
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while (1) asm volatile("hlt");
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return Status;
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}
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